Means and method for sealing boxes and the like



1 Oct 25 7 s. BERGSTEIN MEANS AND METHOD FOR SEALING BOXES AND THE LIKE 2 Sheets-Sheet 1 Filed Nov. 5. 1926 INVENTOR.

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. 1,647,073 O t. 25, v s. BERGSTEIN MEANS AND IETHOD FOR SEALING BOXES AND THE LIKE Filed Nov. 5, 1926 I 2 Sheets-Sheet 2 Fig. 10.

ATTORNEY Patented Oct. 25, 1927.

UNITED STATES- PATENT OFFICE.

SAMUEL BERGSTEIN, or MIDDLETOWN, OH'IO, AssIGNoR To THE INTERSTATE FOLD- ING BOX COMPANY, or MIDDLETOWN, OHIO.

MEAN' S AND METHOD FOR SEALING BOXES AND 'THE LIKE.

Application filed November 5, 1926. Serial No. 146,496.

' representative type of box before the parts are assembled and sealed;

' Fig.2 is a perspective View of the form for assembling and sealing the boxes;

1 Fig. 3'is a view in section on lines 3-3 of Fig. 2;

Figs. 4, 5 and '6 are views illustrating sue cessive steps of assembling and sealing the boxes;

Fig. 7 is a view illustrating a modification of a step of assembling and sealing the boxes; j I

FigsLS and 9 aredetail views of a modified form of the assembling and sealing device; I

Fig. 10 is a perspective view of the adhesive applying devices. p The invention is here shown as applied for assembling and sealing paper boxes of a common type used for distributing food products, as crackers or the like, which are subject to rapid deterioration when exposed even slightly to the atmosphereor moisture.

The common practice is to use moisture proof box material, treated to render the sameimpervious to moisture, atmospheric action, vermin etc., to assemble the end panels or bottom of the box with staples, then joining corners of the lidswith staples and finally fastening the lid .to the body manually with strips of adhesive tape.

This method even with the use of the impervious box material is not effective to accomplish the purpose intended, towit, to protect contents from atmospheric action, and moisture, for the reason that where the joints are formed withstaples on'the bot tom of the box, and also the described method of fastening the lid to the body of the box permits crevices through which the moisture, atmosphere, vermin etc., will penetrate to the Contents, thus negativing the good qualities of the box material used.

The objects attained in the invention 'con- .sist of means and method forassembling and sealing the boxeswhich 'eifectivelyfovercome these objections. Box material can be "usedpit cheaper grade andbymore er:

' sisti ng of the body and covers for the "box,

being furnished fiat, or knocked down, the bodies of the boxes being formed into open end tubes.

'Su'itable forms as illustrated in Figs. 2 and 8, are provided for assembling and sealing the boxes, the same consisting of a frame 1, shapedto' conform to the shape of the boxes, being larger than the boxes to permit of seating the same in the frame. 'A series of springpressure devices 2, as shown in Fig. 2, or 3, as shown in Fig. 8, are arranged on theinner walls of the frame which act toshape the covers andseal the same over the-open ends, or top and bottom, of the "bodies 5-of't'he boxes,-as the same are seated in the frame.

application.

Adhesive is also applied to the box covers, adjacent the flaps a, as illustrated at b in Figs. '1and'10, to seal the flaps -c of therbodies of the boxes, double sealed joints being thus formed along all edges of the boxes.

Thepovers are then placed 'on the frame 1, :being supported on the pressure devices 2, as shown in Fig. 4. The bodies 5 of the boxes are thenset on the covers andboth parts are pressed downward until the same are fully seated in the frame, the pressure devices 2. or 3,as the case may be, acting 't 'shape the covers over the lower ends of "the 'boxes and, at the same time, to ejiect sealing of the oints on the four eiees'ef the i frame i lustrated in Fi 7, which has the effect of assembling and sealing the second cover of the box. V

In either method here shown for assembling and sealing the boxes sufiicient time elapses in forming, filling and sealing the boxes to permit the adhesive to set so that firm joints result. If desirable several sets of the assembling frames may be used to permit of leaving the sealed boxes in the frames longer, after the same have been filled for permitting the adhesive to set.

It will be obvious that the boxes can be filled with the bottoms unsealed and supported as illustrated in Fig. i and that the boxes can then be sealed simultaneously, at top and bottom, by using two of the assembling forms as illustrated in Fi 7.

The two forms of pressure devices shown in the drawings -the curved flat springs 2 with the spring adjusting members 6, as best shown in detail Fig. 3, or the extended coiled springs 3, with the spring adjusting Inembers 7, for regulating the tension of the springs, as shown in Fig. 9, are representative of any suitable pressure devices for forming adhesion of the joints along their entire lengths.

Having described my invention, I claim:

1. Means for sealing boxes consisting in a supporting member, a pressure element ar ranged on said member to define a space con forming to the shape of the boxes, adapted to support adhesive treated covers for the boxes, for receiving the covers and said boxes therebetween, and acting to form and seal said covers over the boxes, as the same are seated in said space.

2. Means for sealing boxes consisting in a plurality of supporting members, adapted to be placed in inverted relation one relative to the other, a pressure element arranged on each member to define a space conforming to the shape of the boxes, and to be disposed relative to adhesive treated covers of the boxes for receiving the covers and said boxes therebetween and each acting to form and seal said covers over the boxes, as the same are pressed into said spaces.

3. Means for sealing boxes consisting in a supporting member a plurality of adjustable, spring-tensioned pressure elements arranged to define a space conforming to the shape of the boxes, adapted to support ada. In a modified form hesive treated covers for the boxes, for receiving the covers and said boxes therebetween, for exerting pressure yieldingly thereon and acting to form and seal said covers over the boxes, as the same are seated causing said elements to act to form and seal the covers over the boxes byseating the same in said spaces, in filling'the boxes and in like manner assembling and sealing the covers over the opposite ends of the boxes.

5. The herein described method of assembling, filling and sealing boxes consisting in positioning adhesive treated covers for the boxes relative to pressure, elements arranged to define a space conforming tothe shape of the boxes, in placing open ended bodies of the boxes upon said covers, inca us ing said elements to act to form andseal the covers over the boxes by seating the same in said space, in filling the boxes, in positioning covers over the opposite ends of the boxes and in positioning a second unit of said pressure, elements over said second covers and in like manner efiect assembling and sealing of the same over the boxes.

6. The herein described method of assembling, filling and sealing boxes consisting in providing a plurality of sets of box assembling and sealing devices comprising pres sure elements arranged to define spaces conforming to the shape of the boxes, in positioning adhesive treated covers for the boxes relative to a unit of each set of said devices, in placing open ended bodies of theboxes upon said covers, in causing said elements lengths of the joints of the covers.

7. The herein described method of assembling and sealing paper boxes consisting in rendering covers for the boxes adhesive, the covers having sealing flaps adapted to be disposed outwardly of the box, and positioning the same relative to pressure elements arranged to define a space conforming to the shape of the boxes, in placing open ended bodies of the boxes having inwardly extended flaps adapted to be joined adhesively to said covers and in effecting double sealed joints between said covers and bodies by pressing the same into said space.

8. The herein described method of filling and sealing boxes consisting in positioning adhesive treated bottom covers for the boxes relative to pressure elements, in placing open ended bodies of the boxes upon said covers, in filling the boxes, in positioning adhesive treated top covers upon said bodies, in positioning asecond unit of said pressure elements relative to the top covers, and in sealing the boxes by moving the pressure units one relative to another.

In testimony whereof, I aflix my signa ture.

SAMUEL BERGSTEIN. 

